Means for utilizing waste gas in internal-combustion engines.



F. L. & L. DAN/IRON.

MEANS FOR UTILIZING WASTE GAS IN INTERNAL COMBUSTION ENGINES.

4 APPLICATION. FILED AUG-21, I917.

1,283,096. Paiiented 001;.29, I918.

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FRANKLIN L. -DAMRQN AND LEROY BMW, 01' LOS ANGELES, CALIFORNIA.

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- To all whom it may concern:

Be it known tlhat:- we, FRANKLIN Ii. DAM' RON and LEROY DAMRoN, citizens of the ,United States, residin at Los Angeles, in "the county of fornia, have invented cert-ain'new and useful Improvements in Means for Utilizing Waste 'Gas in Internal Combustion E 53316 of which the following is aispecification.

Our invention relates broadly to internal combustion engines such as are employed in the operation of motor vehicles, and has for an object the provision of means for connecting thecrank case of the engine with the carburetor or intake manifold for the pur pose of saving such ofth'e products of combustion'as are generally discharged from the crank. case, either through theoilintake or nozzle, or otherwise. j

.,A'considerable'portion of the gases iorming the products of combustion in the cylinders. escape around the peripheries of the piston rings and are delivered therefrom to Y the crank case; from .which they. are usually discharged pr escape in some manner to the atmosphere, All types. 'ofmotors are "provided with a nozzle throughwhich the oil is supplied to the orankcasefa'nd-gsuch gases Ilstiallyescape through thesefnoz'zlesl. 'Itis.

an object,'t herefore, to provide means for establishing communication j-betweenz the' 011 supply nozzle and the intake oi the 'caibu-;

reter whereby; the. suction i {the manifold may" draw or induce a flow of the unburned gases from the engine to and for 'IIllXtllIG with the fueljfrom the carbureter to the intake manifold. p v I Some engines." have. what is generally known as astove by means of which air from the vicinity of "the exhaust pipe of the engine is heated and induced in the intake "manifold for facilitating the combustion of the fuel. With our devlce such means may for may n6t'be used,?but we prefer to dis pense with the stove for thereason that the. gas supplied from the crank, being hot, w1ll serve the same urpose andafiord better results than the ot airs, i I l It is, however, necessary to *supplly' gair with the gas to-the carbureter i n or er to increase the amount of oxygen above that which would be contained in the partially consumed gases, and for this purpose; we provide anair valve in the means of communication between the engine crank case Los Ange es and State of Califat "the! end 0 Specification of Letters Patent. P t nt @m, 29, mg, Application filed August 21', 1917. Serial No.

and the carburetor, so that the same may be supplied with the gas in suitable quantities. Other objects may appear as the description progresses;

' IWe attain the objects of our inveii'tioifby means of the elements disclosed in the ac.

companying drawings, in whichFigure 1 is a side elevation of a well 'known'type of internal combustion engine as used for an equally well known type of automobile, in

which our invention is shown'applied' to. the engine and in readiness for use. Fig. i

2 is a plan of our invention with the. engine shown in broken lines in proximityfthereto.

Fig. 3 is a plan of a portionof the gas supply pipe and valve mounted therein; lFigA an elevation of the same, and Fig. 5 is a transverse section-thereof. Similar charactersof reference are employed in the several views? of the drawings and throughout the specifi- 7,5;- cation forindicating.tlie'sameor like pa rtsf' In the type of engine-showman oil sup ply nozzle 1, generally of the crank case 2. The carbureter 3 isoon-s known as a breather isprovided near, the front end nected by means of the intake manifeld with the engine cylinders 5, and a stove. 6 is generally provided for attachment to the exhaust pipe 7 and the air intake 8 ofthe carbureter 3, the hot .air from the vicinity of the 'exhaust pipe, as stated, being induced through pipe 9' leading from the stove to the carbu'reter, thence through the oarbureter' and into the cylindersulv r I ,In lieu of the pipe 9', w provide a tube 1O, preferably of flexible character, whichis suitably attachedto the air intake 8 of the carbureter and is extended upwardly and j forwardly of the 'carbureter to a point slightly to the rearrofthe breather 1. A "rigid section ofiflfpipe 11 having ,a downwardly turned elhow,12 is attached removablyto the o 'ening in the breather nozzle the depending'xtension in lieu of the cap'which is usually provided. The rear endiof otherwise suitably .connected with the for-' ward end of the flexible tube 10, thus aflonding direct communication between the crank case 2 and-the carbureter' irw i i If for any. reason, it shouldbe desirable to use the stove -6 and pipe 9 in. connection with the pipe 11 and tube 10, the'rear end.

of the latter mayfbecon'nected in a suitable the pipe 11 is soidered 'or-f manner with the pipe 9 instead of with the 10 carbureter, as shown. Such a combination 1s thought to be unnecessary, however, for we provlde an air valve 13, as shown 1n Figs. '3, 4 and 5, which is slidably mounted in a fitting attachable to the pipe .11, the

, valve seating in the lower extension 14 of the fitting and the stem 15 thereof being .slidable in a boss 16 on the upper end of the body 17 The valve stem carries a collar 18 on the'upper end and a spring 19 which is.

held in tension between the collar and the upper end of the bodyl'? of the fitting. A- chamber 20 in the body 17 communicateswith the atmosphere by means of a plurality of apertures 21 in the topof the body and with the interior ofthe pipe ll by means of a passage 22 terminating in a seat for the valve 13. A saddle 23 is integrally formed 4 pressing the sprin with the valve body 17 and may be secured to the periphery of the pipe 11 by means of the rivets 24- shown, or otherwise, so as to render the connection air tight. 7

It will be apparent that the valve 13 and its stem will move downwardly with the downward movement of the pistons, due to the vacuum created in pipe 11, 'thus comof air into pipe 11 for mixture with the gas therein and 'for further mixture in the carbureter with th'pure liquid fuel; the gas introduced through pipe 11- being heated, the air sointroduced will also become heated before admission to the intake manifold and the combustion of the fuel will be facilitated. This same elfect, we are aware, is accomplished by the stove 6 and pipe 9, but the gas from the crank case .is not supplied with the air as in our invention, and themeans 19 and permitting the" entrance of a certain and necessary amount aneaoee disclosed for utilizing and burning all of the waste gases from 'the engine provide greater economy in operation'and a more perfect combustion'than is possible in the well known form of -device.

We do not desii eto limit ourselves to the exact form of the elements, or the particular 'icombinatio'n shown and described, for it would appear to be possible to modify the I tion engine, and a carburet/er connected therewith, a-pipe having a rigid section attached t0 and communicating with the breather opening to the crank case, a flexible section connectingsaid rigid section with said carbureter, and a valve mounted on said pipehaving an air chamber open to the atmosphere and communicating with the interior of said pipe, said valve serving to normally close communication between said chamber and said plpe, and to open communlcatlon ther'ebetween when a suction is created in said pipe-for drawing the unconsumed gases from the crankcase into the carbureter for further combustion.

FRAN LL DAMRON. "LEROY DAB/IRON, I

Witnesses: r

I H.'D. Wrnrrson,

ROBERT-B. Brenner. 

